Type-writing machine.



E. THI'TREY.

TYPE WRITING-MACHINE.

APPLIUATIONIFILED SEPT. 5,1907.

925,530. Patented June 22, 1909.

2 SHEETS-SHEET l.

W/ T/VESSES g5. J LaMQZw/MM E. THUREY. TYPE WRITING MACHINE.

APPLICATION FILED SEPT. 5,1907.

925,530. Patented June 22, 1909.

2 SHEETS-SHEET 2.

A UNITED STATES PATENT onnicn.

EDUARD THUREY, or KALK, NEAR COLOGNE, GERMANY, AssIGNon TO THEASSOCIATION 'rnnany-scnREIBMAscnmnN-onsELLscnAFT MIT BESOHRANKTERHAFTUNG, OF

COLOGNE, GERMANY.

TYPE-WRITING- MACHINE.

Application filed September 5, 1907. SerlaINo. 821,489.

To all whcrm it may concern:

Be it known that I, EDUARI) Ti-n'ine'r, of Kalli, a citizen of the freecity of Hamburg, and Whose post-otiice address is No. '11Neuerburgstrasse, Kalk, near Colo ne, Prussia, German Empire, haveinvente new and useful Improvements in 'llype-VV'riting Matant that thevarious devices of the whole machine should cooperate in a" definite andexact manner, as otherwise good and uniform impressions cannot beobtained.

The improvements can be applied without the general arrangement, andespecially to usual normal feed of the paper, having to be altered.

.I will describe my invention with reference to the accompanyingdrawings.

Figure 1 is a planof the'machine, the parts which are not required to beshown for the explanation of the invention being omitted; Fig. 2 is afront elevation; Fig. 3 is a side view, partly in section, of the rearpart of the machine; Figs. 4, 5 and (3 show separately, and drawn to alarger scale, the regulating device for thekey-levers, and Figs. 7 and 8show, also drawn to a larger scale, the device for actuating thetypecarrier.

In key-board type-writing machines, in which the type-wheel does notitself: strike against the paper, it is necessary to employ a hammer,plunger, or thelike, (Ifwill refer to it the hammer),.which pressesv thepaper from behind against the types of the type-carrier which arebrought into position for printing. As the sheet-of paper, on acr-ountof its movability upward, downward, and from side to side, requires acomparatively large amount of space, some difiiculties are experiencedin transmitting the movement of the keys to the hammer.

ln known arrangements the transmission nunubcrs'rrbyrundirectly belowthe carriage stralghtway to the hammer, but this neccssi- Specificationof Letters Patent.

Patented June 22, 1909.

rom beind, and accessory devices become neces- Both this mode of feedingthe paper and the accessory devices are open to obJection. In order toretain the convenient normal feedin of the paper, the horizontal spindleof the hammer, which lies in a ver tical plane, has been so far extendedthat it is possible to go around the space taken by the paper, am behindthe paper a s indiev has been arranged in a direction para lel tothearbor of the hammer, the keys imparting a rotary motion to thisspindle, wlnch mo 'tion is transmitted to the arbor of the hammer by alink arrangement,but this device has dpsadyantagos winch it is thepurpose of this invention to obviate, while at the same time the normalfeedihgof the paper. is retained, the use of elastic members beingdispensed with, so that an instantaneous anddirect transmlssion ofthermotion 1s ef- .t'ected. In the older arrangement the 1on rod-guidecauses a certain amount 01 spriuginessbecause the various parts must notbe made too heavy, and this springiness retards the transmission ofmotion, thereby affecting the speed of the machine. -In addition to thisa part ofthe power exerted is lost, so that the quality and number ofcopies obtainable are-not such as is desired.

The machine in accordance with this invention has the further advantagethat a strong, inert-using acceleration is imparted lothe hammer, whilethe parts operating the hammer preserve an almost uniform velocity. Thedifference in the action at the moment when the hammer receives themotion for the printing of the type is so'great that the hammer has onlyto move a short distance, the intermediate members being no longcr Isubjected to the force applied to the key. The momentum is therebygenerated almost entirely in the hammer and delivered to the type withbut little loss. The momentum generated in the intermediate members oftates change in the normal feedin 'of the paper which jfinust beintroduced In the machines hitherto in use, the motion of the hcnunertakes place in a vertical plane, while in accordance with thisinvention, the hammer moves in a. horizontal plane. This not onlypermits of e nonelastic connection between the key and the hammer,butitalso elicctssriving of power, because A hammer moving upwardrequires more power to move it. than a hammer moving in e horizontelplane.

A further ndventogeq'of the construction ,according to this invention isthat the mem bers transmitting motion to the hammer are utilized tooperate a ,lever. for the following purpose. The sheet ofpeper islzcptby e spring a few millimeters away iron the type-carrier so thatthe inspection of what has been written is possible to such an extentthat even the last letter printed is always in view. hen the hammer isoperated, the said lever brings the sheet of paper slow] to within ashort distance of the tv 1c whee say half a millimeter. If this leverwere not rovided, the freely moving immmer woul have to bring the paperinto post tion, and this would not only consume a part of the momentum,but would also, on account of its suddenness, produce an objectionablecrackling sound. These disuct vantages are obviated by the presentinvention. Extra expenditure of power for movin g the lever is scarcelyneeded as on account of the slowness ofits motion, the frictionalresistances are slightand the spring which retracts the papcrfromtlietype cariiicr" ussists the rearward inovenient of the whole hummermechanism so that the hammer retreating spring may be madecorrespondingly mounted on twe spindlesfi, stirrups 4 being secured tosrleors-, To the let's-bond arbor 5 erese cured stirrup 4: and lever 6,while a stirru t and lever 8 are also secured to the right lend erlaorfi. vThe levers 6 end 8 are so connected by erod 7 that both stirrups imovesimultaneously, and if the stirrup i at the left-liand side bedepressed by a type.

key, the right-hand stirrup e is likewise .lepressed. Themovement istransmitted by a link 9, jointed to the lever 8, to a U-shaped memberconsisting of an arbor 12 and 11p ward arms ll "end Depression of thestirrups 4i consequently. results in a nlovc-v rnent to the left ii thearms ll and 13.

Between the ri l 13 and the hammer 19, 21.,(whmh-tdrnstn the pin 20), 15it link emcee connection consisting oat eonei' i that motion of the armto the 212v the hammerhmed 2i egeiit st the ty rier i0 and the-paperbetween ti: Wheel and the pap-enroll 18 is iirong'liti to contact withthe selected type of the tygic carrier.

When the head 21 of the hammer :21, is (on the key being depressed} inthe vi ity of the type-cylinder 3.43, the ence of: henun r, the puslmod1% end the-pivot pin 20 of the hammer ere. nearly in. the line. Bytloechange in the position of the push-rod i l. the hammer lies quieterecceleration, and, the momentum of tlie lia se er nicr is but littleimpeded it, shortly l elfore the hammer reaches the type-cerrior, themotion oi the type-key ceases to act on one of the stirrups 4. This isnecessar in order to obtain a neat impression, for before this can. takeplace, the type-cerrier mustlilfi brought to rest, this lieing'sccuretiby previous arrest of the typedrej operating; type-carrier. 0n thereturn typed? the hen'nner mechanism is moved one the spring-22 (Rig.2,; until the head 21 meets witlicstop 22, when t whole system is againin its initial position;

The Ll-shaped piece constituted the arbor 12 nodal-111s 11 and i3 notonl. to transmit the motion of the kcws to the hammer but also causes,at tile same time movement of u lever 16 pressing the paper toward thetypc-cerrien This effected means ofa rod 15, whit-3 0 connected by thearm 13 of the c Jul li-sheped member (1ll2-13 This rod 1:3 is pivotednear to the pivot of the arm Till so that the movement of the lever 16is, in conse qnncerery small and slow In order to-olitein good printinit is not only-neces ary to consider tile n recent of the hammer. butalso the cc spending nuivcmcnt of tl e type-carrier, the uctioii ofwhich should be certain. Au owling to the 1 type struck, this carrier orthe member transmitting the HM mc-ntto we eliy rotate to the right, or2'35 1 n the example shownin a. motion is produced by two it? 36, 3S,pivoted on the.spite" acting. with the toothed W1) mounted on the 5indie .li) by type-cerrierlO is rrivenh In a of this kind it is as arule neces' engagemcntof one of the sectors 911i take place when theotlier'sector comes into ope 'ation and that each of the meters findsthe driving wheelcerresponding to it in the proper p'ositionteady forgearing, liters Over, the licdyto be set into rotation Si. mid luive asnia llfmass end l)? brought toltestu without causing. Zobjcctiorieblenoise. simyfli'city .oftlie' whole construction coimnon with allarrengeinents used in coin tion 11, 41, a plain portion 42, 42 and ahookehaped projection of the absorb the momentum.

deep recessed smooth portion 43, 43. These parts co-act with thecorresponding parts 44, 45, or 44?, 45 bf the respective sectors. Thetoothed portion of the wheels gears with the toothed portion of thesectors, while the plain portion prevents the engagement of one sectorwhen the other is operated. The more deeply recessed part allows lay forthe hook-shaped projection of the sector which at rest so that thedriving wheel which is not in gear follows the motion of the other, thedrivin wheels having no motion relatively to eath other. The side faceof the part unprovided with teeth limits the backward motlon oi thedriving wheel, the toothed sector which is at rest acting as'a stop, Itboth toothed sectors be at rest,,the hooked projections lie against thecorresponding side faces of the part not provided with teeth, thedriving wheels being thereby held in their mid position. wheels iseffected by the toothed sectors, It is in this arrangement of importancethat the last tooth of the backward moving toothed sector comes out ofthe corresponding tooth space in the driving wheel to such extent thatthe said tooth is clear of the path of the teethof the driving wheel.lit will be suiticient as a rule for the toothed sector to initiate thereturn motion of the toothed wheel. The momentum of the driving wheeland the heavier parts secured to it is sufi'icient to accomplish theremaining part of the movement, which is small but sutiicient foraccurate working. In cases however in which the backward movement takesplace but slowly, namely, when the forward movement requires but a verysmall rotation, the fric tional resistance may be large enough to Inthis case, the driving wheels must he returned to the mid position by aspecial device. in the arrangement shown this is obtained by so formingthe working edge of the hook-shaped projection that the points of thehook exert a leverage on the wheel, a slight rounding of the hook pointsand of the side edge of the plain part of the driving wheel.

The movement of the spindle a O is, by

neans of hevei wheel 32. 33, transmitted to the arbor H. andtype-carrier 10. in order T he return motion of the driving whichassisted bythat the motion of the type-carrier shall he not greater thanis required for the type struck, a cylinder 29 isprovided which car-'ries stops 30.and 31, the depth of which corresponds with the positionof the type on the type-carrier. When either of the keys is struck, oneof the said stops 30, 31, comes into the path of the correspondingkey-lever and limits its motion at the moment when the type to hcprintedreaches the printing position.

()n a key being struck, in machines of a type bar pattern, or iv thosehaving a type- -arrier of the above described kind, several devices areset in motion at the same t1me.

In the arrangementfin accordance with this 1nvent1on,"these devices arethe type-adjusting device, the type-printing device, and the device forthe escapement of the paper-carriage (the latter is not shown in' thedrawings). In the cooperation of these devices,.a certain sequence, or'time interval, for setting the parts in motion is necessary. Parts notaccurately arranged, or worn out by friction, must be reradjusted' afterthey have been some time at work. Hitherto this I'E'fldjllSh': menthasbeen eilected by filing in the case of metal parts, which .istroublesome, any required addition of material being still moretroublesome. 0n the score of simplicity it is preferable to arrange aregulating device on the separate key levers, ut usually the material,or the shape of the keylevers, prevents this, especially if adjustingscrews are to be employed. Furthermore,

both on the score of simplicity and rapid manipulation, it is absolutelynecessary to make the device easily accessible by means i of.screw-drivers, spanners, and the like.

The essential part of the said device consists,

as shown in Figs. '2, 4, 5 and 6 of a U-shaped member 25 embracing eachof the key-levers, the said U-shaped member being pivoted at 39 to thelever 1. The adjustment of the U-shaped member 25 on its pivot is such,or it is clamped to the key-lever so, that the U-shaped member cannotfall down. This can be secured either by the natural tension of ariveted pivot, or by a suitable spring being given to the sides 37 (Fig.lTo

, 8 t iat obtain this springing action, the part connects the two sides37 is somewhat cut away for about half the length of the memher, thepart 38 which is left forming, or carrying, the stop .t'or a hair 24(Fig. 2) extending underthe key levers, or any other member transmittingthe motion of thekeys. A screw 26 serves to adjust the-member at variousdistances from the lower face of the key-lever. For the reception of thescrew 26, the member 25 is provided with a projection, or thickening,27. A. jam-nut 28 serves to secure the screw in position. If

the key-levers be of metal, the end' of the the lower face of the lever,but if the levers be made of wood, a resisting striking plate for theend of the screw may be formed by means of a Ushaped bent plate with atongue-shaped extension weh, passing over the wooden lover. v

It will be evident that the Getails of the apparatus may he modified inmany Ways without departing from the spirit of this will rock the bar 12and oscillate the hammer, substantially as described."

2. A typewriter comprising a movable type carrier, a hammer oscillatingin ahorizoi'ltal plane, a lever independent of the hammer for pressingthe paper toward the type we .1191, key mechanism and a system of links.

and hers for transmitting the movement of the key mechanism to thehammer anti lever, snbstentially as described.

In type-writing machines with movable type carrier heimner mechanism andkey mechani'sn'l, the combination of the type carrier, with two sectorshaving hook shaped projectioi'ls two driving whee s operating the typecarrier the said thriving wheels'having a toothed portion, a raisedsmooth portion anti a recessed portion, essentially as and for thepurpose stated. i l. in a typewrltmg machine with movable .ty'ie-carrier, ltammer'mechanism aml key mechanism, the combination of akey lover, a U-SllbtPQtl member, pivotally attached to said key-lever,the side pieces of sa'itl member being adapted to clamp the same on thekeylever, a projection on the member and a screw in said projection foradjusting the member at various distances from the lower face of thekey-lever, essentially as and for the purpose stated.

5. A typewriter con'zprisingamovable type carrier, a hammer havingoscillating movement in a horizontal plane, a lever independent of thehammer for pressing the paper toward the type carrier key mechanism,arocking hal- 12 located. transversely-of the machine at one end thereof,11 rights on saitl bar, a link connecting one 0 said uprights with thehammer, a link conneetin the same upright with theleveryajthird linconnectecl with the other npri' ht, and means for connecting said thirdlinii with the hey mechanism, whereby the movement of the keys will rockthe ear 12 and oscillate the hammer and lever.

In testimony whereof I have hereunto set my hand in presence of twosubscribing witnesses.

EDUARD rnnnnr.

"Witnesses? Loans Vlmnonn",

M. Kn'nrrmns.

